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Journal articles on the topic 'WITNESS simulation'

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Author: Grafiati

Published: 10 December 2022

Last updated: 28 January 2023

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1

Ismail, Azhar, Muhammad Latif, and Mian Awai. "Exploiting witness for traffic simulation." Journal of Management and Science 1, no. 1 (June 30, 2014): 12–24. http://dx.doi.org/10.26524/jms.2014.2.

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Traffic congestion in urban cities is an increasing problem. Not only does it lead to an increase in pollution, but the time spent waiting in traffic queues wastes valuable time in addition to causing frustration. A system that can control and manage traffic efficiently is one way that this issue can be reduced.A specific road traffic intersection in South Manchester, UK, was selected for investigation as it experiences high levels of traffic flow through it during the evening peak time. This has led to large queues and long waiting times due to the fixed timings of the traffic lights. This paper explores strategies to better control the traffic flow through it. A model of the selected traffic junction has been built using Witness simulation software. Data for this junction has been obtained partially from observations and mostly from traffic surveys enabling a simulation of the traffic flow. Analysing the results allowed two alternative scenarios to be developed and simulated. Results from one of the scenarios showed noticeable reductions in the average queue waiting times at the traffic junction.

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Khakdaman, Masoud, Milad Zeinahvazi, Bahareh Zohoori, Fardokht Nasiri, and Kuan Yew Wong. "Healthcare system simulation using Witness." Journal of Physics: Conference Series 410 (February 8, 2013): 012109. http://dx.doi.org/10.1088/1742-6596/410/1/012109.

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3

Meng, Hua, Hua Wang, Jian Jun Wang, Jian Xin Xu, Su Mei Liang, and Hong Juan Li. "Logistics Simulation of BF-BOF Region Based on Witness." Advanced Materials Research 433-440 (January 2012): 2451–58. http://dx.doi.org/10.4028/www.scientific.net/amr.433-440.2451.

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The concept of logistics system simulation and the basic applications of Witness are introduced in this paper. By a specific example, the simulation model is found about the production process of steel logistics system by Witness. The relationship of production process and computer simulation is illustrated, further, the simulation model is ran and outcome is obtained. Based on the example of the production process of BF-BOF region in iron and steel enterprise simulation model, the method of the production process with WITNESS is analyzed. By setting the parameters to achieve the purpose of the actual production process is optimized. Finally, more feasible solution is put forward by simulation analysis

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4

Clark, Martin F. "WITNESS: Unlocking the power of visual interactive simulation." European Journal of Operational Research 54, no. 3 (October 1991): 293–98. http://dx.doi.org/10.1016/0377-2217(91)90103-3.

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Matúšová, Miriam, Erika Hrušková, and Karol Velíšek. "Analyse of Flexible Assembly Cell via Software Witness." Applied Mechanics and Materials 120 (October 2011): 65–69. http://dx.doi.org/10.4028/www.scientific.net/amm.120.65.

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This Computer simulation models allow to solve the problems by their complexity beyond the capacity of other mathematical and analytical methods. WITNESS is suitable software for simulation and optimization of production, service and logistics systems.

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Rodrigues, M. V. T., E. Sirova, and J. Dyntar. "Maintenance Scheduling of Heating Networks Using Simulation in Witness." International Journal of Simulation Modelling 21, no. 2 (June 4, 2022): 203–13. http://dx.doi.org/10.2507/ijsimm21-2-590.

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7

Yasir, A. S. H. M., and N. M. Z. N. Mohamed. "Assembly Line Efficiency Improvement by Using WITNESS Simulation Software." IOP Conference Series: Materials Science and Engineering 319 (March 2018): 012004. http://dx.doi.org/10.1088/1757-899x/319/1/012004.

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8

Onofrejová, Daniela, Jaroslava Janeková, and Miriam Pekarčíková. "SIGNIFICANCE OF SIMULATION AS A FUTURE TREND: WORKPLACE STUDY USING SIMULATION SOFTWARE WITNESS." Acta Simulatio 5, no. 1 (April 14, 2019): 9–12. http://dx.doi.org/10.22306/asim.v5i1.49.

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9

Važan, Pavel, Dominika Jurovatá, Lukáš Hrčka, and Maroš Danek. "Modelling the Traffic System." Research Papers Faculty of Materials Science and Technology Slovak University of Technology 22, no. 35 (December 1, 2014): 31–37. http://dx.doi.org/10.2478/rput-2014-0032.

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Abstract The paper presents the simulation study results of the traffic system in the city of Hlohovec. The authors describe the process of building the model in Witness 2013c simulator. The individual entities of simulation model are explained in details, as the Witness simulator is primarily suitable for manufacture or service simulation and not for traffic system simulation. The goal of this paper is to analyse the traffic system and to suggest the changes for improving the traffic in the city of Hlohovec. All proposed measures will bring about 20% improvement of traffic when compared to the current state.

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10

Matúšová, Miriam. "Material Flow Design Supported by Simulation Methods." Applied Mechanics and Materials 474 (January 2014): 91–96. http://dx.doi.org/10.4028/www.scientific.net/amm.474.91.

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Design solution of material flows planning in manufacturing systems belongs to key aspects that the project engineers must resolute. The conception and technical material flow realisation considerable define the dependability, promptness, consistence and next needed flows of work in the material flow. These necessary material flow functions influence the production quality, the amounts of production costs and the producer profitability. Follow up is starting to use the simulation methods at material flow designs and innovations. These methods are used in verification of new designs of material flows or in validation of just realised material flows. There is possibility of verification and validation usage by software Witness. Witness software simulation offers an optimal solution of problems by means. It enables to simulate working environment as well as material flows. The result is the higher efficiency of whole process and elimination of problems.

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Zhang, Zhihua, Shoushan Luo, Hongliang Zhu, and Yang Xin. "A Clone Detection Algorithm with Low Resource Expenditure for Wireless Sensor Networks." Journal of Sensors 2018 (2018): 1–16. http://dx.doi.org/10.1155/2018/4396381.

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Wireless sensor networks (WSNs) are facing the threats of clone attacks which can launch a variety of other attacks to control or damage the networks. In this paper, a novel distributed clone detection protocol with low resource expenditure is proposed for randomly deployed networks. The method consisting of witness chain establishment and clone detection route generation is implemented in the nonhotspot area of the network organized in a ring structure, which balances the resource consumption in the whole network. The witness chains and detection routes are in the centrifugal direction and circumferential direction, respectively, which can ensure the encounter of witnesses and detection routes of nodes with the same ID but different positions to detect clone attacks. Theoretical analysis demonstrates that the detection probability can be up to 1 with reliable witnesses. Moreover, both theoretical analysis and simulation results manifest that the proposed method can achieve better network lifetime and storage requirements with low resource expenditure and outperforms most methods in the literature.

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12

Meng, Hua, Hua Wang, and Jian Jun Wang. "Simulation of M/M/1 Queue Model Based on WITNESS." Advanced Materials Research 261-263 (May 2011): 753–56. http://dx.doi.org/10.4028/www.scientific.net/amr.261-263.753.

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The techno-interface of BF-BOF region is an important stage that connects iron making procedure with steel making procedure in the production line, acting as a connecting link between the preceding and the following procedure. It is also the key region to optimize the iron making and steel making process as a whole. In this paper, based on queuing theory method for BF-BOF region simulation, a static simulation method is presented to realize the simulation of dynamic system, WITNESS is used to simulate the M/M/1 queue model. The number of different transportation ladles has been analyzed to influence the BF-BOF region, the best ladles were obtained in order to improve production rate. The results show that the modeling method can reflect the complex system characteristics of BF-BOF region and provide the advice for system optimization.

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Tvrdoň, Leo, and Karla Jurásková. "Teaching Simulation in Logistics by Using Witness and Captivate Software." Procedia - Social and Behavioral Sciences 174 (February 2015): 4083–89. http://dx.doi.org/10.1016/j.sbspro.2015.01.1158.

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14

Wang, Qing-Zhou, Jia-Meng Chen, Ming-Lang Tseng, Hai-Min Luan, and Mohd Helmi Ali. "Modelling green multimodal transport route performance with witness simulation software." Journal of Cleaner Production 248 (March 2020): 119245. http://dx.doi.org/10.1016/j.jclepro.2019.119245.

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15

Chen, Yan Hai, Hai Feng Li, Fu Shang Qiu, Jing Xu, and Zi Tong Feng. "Study on the Product Development Process Based on WITNESS Simulation." Applied Mechanics and Materials 577 (July 2014): 1292–95. http://dx.doi.org/10.4028/www.scientific.net/amm.577.1292.

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The differences of development cycle between product serial and concurrent development process are obtained through simulation in this paper, which implies the importance of rational planning in the process of product development. The models of product serial and concurrent development process are built based on witness. Three types of models for both simple and complex products have been made respectively to simulate ,and then compared results have been got under six different conditions . Among six situations, the results of four are that the time of concurrent process is much shorter than that of serial process; one is that the time is very close; another is that concurrent process is much longer. We draw a conclusion that product development process must be rationally planned in order to shorten the development cycle for some complex products.

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Wang, Gui Cong, Chuan Peng Li, and Huan Yong Cui. "Simulation Optimization of Multi-Objective Flexible Job Shop Scheduling." Applied Mechanics and Materials 365-366 (August 2013): 602–5. http://dx.doi.org/10.4028/www.scientific.net/amm.365-366.602.

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Current scheduling approach for multiple objective flexible job shop problem (FJSP) cannot construct a precise scheduling model and obtain a satisfactory scheduling result at the same time. To deal with this problem, a simulation optimization scheduling approach was presented which was composed of two basic modules: the Fast non-dominated Sorting Genetic Algorithm (NSGA-II) module and Witness simulation module. Firstly, a multi-objective mathematical model was found for FJSP and NSGA-II was applied to solve. Then, a set of Pareto optimal solution was obtained by NSGA-II module. In order to select the final solution from the Pareto optimal solution for FJSP, the simulation model was set up by Witness, every Pareto solution was as input for simulation model. Finally, the final solution can be selected according other performance indicators.

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Krajčová, Katarína, František Pecháček, and Karol Velíšek. "Organizational Machines Layout and the Application of Individual Features on the Specific Production Respectively Assembly through the Simulation." Advanced Materials Research 479-481 (February 2012): 508–11. http://dx.doi.org/10.4028/www.scientific.net/amr.479-481.508.

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The great emphasis is currently placed on the optimal layout of individual workplaces and machines in the issue of production and production logistics. It is possible to achieve by the selecting an appropriate organizational layout form of machines and devices. There are several layout forms – technological, subject, free, modular and cellular. The paper is focused on clarifying the basic features and differences of individual machines layout and on the application these features on the specific production of certain part type through the simulation in the simulation program. There are several programs, which are used on the production simulation, for example: Plant Simulation, Simul 8, Witness etc. Witness program is the world recognized program. The utilization of individual machines layout is possible to determine by the using of this program. The simulation of production system is possible to use in the assembly system. The similar problem is solving in a project VEGA 1/0206/09 / Intelligent assembly cell.

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18

Strachotova, D., and J. Dyntar. "Support of Scheduling of Multiproduct Pipeline Systems Using Simulation in Witness." International Journal of Simulation Modelling 20, no. 3 (September 10, 2021): 536–46. http://dx.doi.org/10.2507/ijsimm20-3-570.

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19

Bouamra, Omar, and Evelyn Morrison. "Teaching and Learning Discrete-Event Simulation & Modelling with WITNESS®." MSOR Connections, no. 2 (May 2000): 6–10. http://dx.doi.org/10.11120/msor.2000.00020006.

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20

SCHINDLEROVA, VLADIMIRA, and IVANA SAJDLEROVA. "COMPARISON OF BASIC MAINTENANCE CONCEPTS USING WITNESS." MM Science Journal 2021, no. 6 (December 15, 2021): 5435–40. http://dx.doi.org/10.17973/mmsj.2021_12_2021114.

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Maintenance is a complex, extensive and important issue in terms of its impact on the quality of manufactured products or services provided in all areas of industry. The importance of predictive maintenance for the industry in the 21st century is crucial. However, the right approach to maintenance management is often underestimated in many companies today, although it can have a very positive effect on the company’s efficiency. Using the example of a practical application, the paper includes a comparison of three main maintenance concepts – classical (reactive), planned, predictive through the simulation software Witness. Maintenance concepts are compared in terms of their ability to solve and eliminate failures that occur in production facilities during operation.

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21

Runciman, Neil, Nick Vagenas, and Tom Corkal. "Simulation of Haulage Truck Loading Techniques in an Underground Mine Using WITNESS." SIMULATION 68, no. 5 (May 1997): 291–99. http://dx.doi.org/10.1177/003754979706800504.

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22

Plotonenko, Z., and N. Nevskaya. "A Valuable Silent Witness to the Work of the Simulation Center — Who Is It?" Virtual Technologies in Medicine, no. 3 (September 9, 2022): 220–21. http://dx.doi.org/10.46594/2687-0037_2022_3_1534.

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The experience of analyzing the equipment of the simulation center and the state of the simulation and medical equipment during operation is described as a way to assess the quality of the educational process.

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23

Malciu, Adrian, Cristina Pupăză, Constantin-Cristinel Puică, and Iuliana-Florina Pană. "Finite element model validation for a 14.5 mm armor piercing bullet impact on a multi-layered add-on armor plate." MATEC Web of Conferences 373 (2022): 00038. http://dx.doi.org/10.1051/matecconf/202237300038.

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For armor plates testing and evaluation the use of modeling and simulation tools, together with a validated finite element model is a reliable approach in respect to a firing conducted session. The paper presents the validation of an advanced finite element model on the impact between two 14,5 mm armor piercing bullets with a multilayered add-on armor plate made by aluminum alloy, alumina tiles, aramid fabric woven, ultra-high molecular weight polyethylene fiber composite and a steel plate. An 8 mm thick armor steel witness plate was placed at 2 cm behind the add-on plate. The real tests were conducted in a firing range and a chronograph was used to measure the values of the bullet impact velocities. The test results showed that the first bullet penetrates the witness plate and the second bullet only deforms it. A three-dimensional finite element model of the bullet and armor plates was conceived to perform the impact simulations in LS-DYNA. Tensile and compression tests, as well as other scientific methods were employed to establish the strength and failure model parameters for each material. The results of the finite element model follow the experimental ones regarding the yaw angle assumptions that were applied for a simulation scenario.

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Cheng, Qiang, Tian Min Guan, Li Sun, and Feng Bin Jing. "Research on Workshop Layout Based on SLP and Witness." Advanced Materials Research 989-994 (July 2014): 3088–91. http://dx.doi.org/10.4028/www.scientific.net/amr.989-994.3088.

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In the paper, the connecting rod production line in one workshop is taken as the research object. The workshop layout is designed by SLP algorithm. The specific work includes dividing the operating units, quantifying logistics relations and non-logistics relations, determining the importance of proportion and the integrated relationship of activities that based on the actual situation of the workshop, and then getting the plan finally. The Witness simulation is applied to simulate the theoretical analysis results and imitate the production logistics situation of the factory. Finally, the optimization scheme is determined by the comparison of several schemes in the aspects of logistics and the number of back flow.

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Li, Qing Song, Heng Pan, Tao Liang, and Wei Yang. "Simulation on Efficency of Mobile Rack in Medicine Warehouse." Advanced Materials Research 433-440 (January 2012): 3017–21. http://dx.doi.org/10.4028/www.scientific.net/amr.433-440.3017.

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Mobile racks are used broadly in warehouse, especially in those with low items and large stock-keeping unit (SKU). However, contraction between storage capacity and rack efficiency may restrict the usage of mobile racks. Such an example in medicine industry was offered in this paper. Using Witness simulation Software, a model has been developed for medicine warehouse with mobile rack system. Simulations have been executed to analyze rack efficiency in five different scenarios. All scenarios embodied more or less low efficiency and long line in front of buffers. Results indicated that efficiency relies on policies of order-picking and space allocation. It can also be concluded that the minority items of small quantities and low frequency may decide the performance of the whole system.

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Whittall, Jonathan P., Aaron M. Orkin, Curtis Handford, Michelle Klaiman, Pamela Leece, Mercy Charles, Amy Wright, et al. "Resuscitation simulation among people who are likely to witness opioid overdose: Experiences from the SOONER Trial." PLOS ONE 17, no. 7 (July 5, 2022): e0270829. http://dx.doi.org/10.1371/journal.pone.0270829.

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The opioid crisis is a growing public health emergency and increasing resources are being directed towards overdose education. Simulation has emerged as a novel strategy for training overdose response, yet little is known about training non-clinicians in bystander resuscitation. Understanding the perspectives of individuals who are likely to experience or witness opioid overdose is critical to ensure that emergency response is effective. The Surviving Opioid Overdose with Naloxone Education and Resuscitation (SOONER) study evaluates the effectiveness of a novel naloxone education and distribution tool among people who are non-clinicians and likely to witness opioid overdose. Participants’ resuscitation skills are evaluated using a realistic overdose simulation as the primary outcome of the trial. The purpose of our study is to describe the experience of participants with the simulation process in the SOONER study. We employed a semi-structured debriefing interview and a follow up qualitative interview to understand the experience of participants with simulation. A qualitative content analysis was performed using data from 21 participants who participated in the SOONER study. Our qualitative analysis identified 5 themes and 17 subthemes which described the experience of participants within the simulation process. These themes included realism, valuing practical experience, improving self-efficacy, gaining new perspective and bidirectional learning. Our analysis found that simulation was a positive and empowering experience for participants in the SOONER trial, most of whom are marginalized in society. Our study supports the notion that expanding simulation-based education to non-clinicians may offer an acceptable and effective way of supplementing current opioid overdose education strategies. Increasing the accessibility of simulation-based education may represent a paradigm shift whereby simulation is transformed from a primarily academic practice into a patient-based community resource.

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Kovbasiuk, Kateryna, Kamil Židek, Michal Balog, and Liudmyla Dobrovolska. "ANALYSIS OF THE SELECTED SIMULATION SOFTWARE PACKAGES: A STUDY." Acta Tecnología 7, no. 4 (December 31, 2021): 111–20. http://dx.doi.org/10.22306/atec.v7i4.120.

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The simulation software market is becoming more complex and universal. Computer simulations are thus more accessible and are becoming a modern tool that has a wide application in industry. Their potential and benefits can be used in small and large projects. A simulation model can take into account inventory, assembly, production and human resources, leading to decisions that can maintain or improve efficiency at the lowest possible cost. The data obtained through the simulation allow to test different combinations and scenarios in the virtual world. The benefits of manufacturing simulation include reducing investment risk, minimizing waste, improving efficiency, reducing energy consumption and even increasing worker health. The question arises as to which of the possible simulation packages is the most suitable for a given company, so that the investments made are the best possible. In the first part of the paper the theoretical basis of simulation in Industry 4.0 is presented, including the description of the possible simulation modelling tools. The second part of the paper offers comparative and descriptive analysis of six selected discrete-event simulation software packages – AnyLogic, Arena, FlexSim, SIMUL8, Tecnomatix Plant Simulation and WITNESS. The given simulation tools are compared based on their main characteristics, simulation features, application areas and popularity among the companies which use simulation software packages.

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Wang, Yun Rui. "Enterprise Inventory Management and Simulation." Advanced Materials Research 933 (May 2014): 874–78. http://dx.doi.org/10.4028/www.scientific.net/amr.933.874.

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Inventory is an important link in supply chain, according to characteristics and objectives of inventory control, the reasonable safety inventory, order point, the highest inventory and inventory strategy were determined based on historical sales data. Using Witness simulation software, the optimal strategy was selected from nine inventory strategies by running simulation model for one year. If goods shortage was allowing, the seventh schemes (72000,158100) was better ,the minimum total cost was 888158 yuan ; considering allowing a small amount of shortage, the cost of eighth schemes ( 82000,158100) was least of 1095167; the third scenarios (92000,138100) was selected if without shortage, and the minimum total cost was 1254909 yuan. This shows, the application of computer simulation to assist in the management of inventory is scientific and feasible, it can help enterprises to save the order and operation cost.

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Božek, Pavol, Marek Kňažík, and Vladimír Štollmann. "Modern Planning and Control and Virtual Verification of Process Continuity of a New Production Line." Applied Mechanics and Materials 708 (December 2014): 167–72. http://dx.doi.org/10.4028/www.scientific.net/amm.708.167.

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The paper describes one practical implementation of the Digital Factory concept – design of a new production line using modern planning method of virtual testing and control of processes. The project covered graphical facility design, detailed design of operations and material flow simulation. This case study shows facility process planning, commission and in the end finding the optimization rules and corrective actions to increase existing casting line throughput. All phases of the project were carried out using simulation software, duration of the project was 6 months. Simulation software WITNESS has been used for material flow simulation.

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Havlik, Radek, and Alena Gottwaldova. "Design a Platform for Multi-Criteria Analysis of a Computer Simulation." Applied Mechanics and Materials 693 (December 2014): 463–68. http://dx.doi.org/10.4028/www.scientific.net/amm.693.463.

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This paper deals with research in a computer simulation of the manufacturing processes. This article propose a platform for final users when doing experiment with a processes simulation models. The propose platform is called “user friendly”. A module for a final users is not universal but is a midi-universal. The midi-universal module cooperates with the computer simulation software, especially for this experiment has been used software called “Witness”. A platform for multi-criteria analysis is made in a Visual Basic software.

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Baharum, Zirawani, Yuvendra Rao Venkatesan, Syazwa Nabila Mohd Raidzuan, and Muhammad Imran Qureshi. "The development of simulation model on environmental uncertainty factors for interval project completion." International Journal of Engineering & Technology 7, no. 2.29 (May 22, 2018): 62. http://dx.doi.org/10.14419/ijet.v7i2.29.13130.

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The construction industry has many underlying causes of uncertainty that has impact on late delivery of project completion's performance as well as in time management. The issue on uncertainty delays directly impact the project performance that leads into unnecessary time extension. The objective of the research is the way to create a valid model towards the environmental uncertainty factors. Therefore, this research is conducted to identify the impact of environmental issues which affect the period of project completion using the Witness software system. A literature review revealed the types of other uncertainty factors that affect the project completion by using other software’s such as Monte Carlo analysis and relative important index. This research is intended to measure the impact of each environmental factor using the Witness software system by evaluating their significant level of each. The significant level of the factors was determined by using the SPSS statistics software tools. The model will help to manage the time and costing factors by reducing the main impact from the environment. This will aid all project contractors in managing their resources and time utilities.

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Ma, Li, Meiqiong Ma, Chao Ma, Jingwen Deng, Xingluo Liu, and Lijun Zhao. "Simulation and Optimization Study on Layout Planning of Plant Factory Based on WITNESS." International Journal of Security and Its Applications 10, no. 5 (May 31, 2016): 275–82. http://dx.doi.org/10.14257/ijsia.2016.10.5.26.

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Tan, S. M., J. Q. Hwang, and H. Ab-Samat. "WITNESS simulation of preventive and corrective maintenance for Surface Mounted Technology (SMT) line." IOP Conference Series: Materials Science and Engineering 505 (July 4, 2019): 012047. http://dx.doi.org/10.1088/1757-899x/505/1/012047.

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Hole, Vi Jay, and N. R. Rajhansa. "Performance Evaluation of an Engine Assembly Line through Simulation." Applied Mechanics and Materials 612 (August 2014): 111–15. http://dx.doi.org/10.4028/www.scientific.net/amm.612.111.

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Simulation can be used in industrial field allowing the systems behavior to be learnt and tested. This work involves simulation and analysis of the engine assembly line. An engine assembly line contains three subsystems namely engine assembly, hot test line and paint shop. A simulation model built up in modeling software-WITNESS by considered entire set of data. The model validated and several what-if scenarios generated. The different scenario has been analyzed. Finally the throughput, optimum number of pallet and bottleneck identified. This paper discusses the need and uses of discrete event simulation in the design for final engine assemblies.

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Li, Zhan, and Da Shen Xue. "The Application of Simulation Technology in the Inventory System." Applied Mechanics and Materials 380-384 (August 2013): 1473–76. http://dx.doi.org/10.4028/www.scientific.net/amm.380-384.1473.

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For a long time, the mathematical model is used to describe the systems characteristics and acquire the solutions, so it gradually develops into a modern computer simulation technology, and it can be used to solve many problems which are complex and unable resolve use mathematical methods. Witness modeling simulation software is applied in this article, and examples analysis is put forward in view of the logistics system of inventory control, finally making the models on the part of the module, whats more, it analysis the data and makes the optimal strategy.

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Chen, Yan Hai, Hai Feng Li, Jing Xu, Fu Sheng Qiu, and Gong Dong Wang. "Study on the Product CAPP-PPC Process Based on Productibility." Applied Mechanics and Materials 668-669 (October 2014): 1651–54. http://dx.doi.org/10.4028/www.scientific.net/amm.668-669.1651.

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In order to make a rational planning of CAPP-PPC process, the differences of product serial and concurrent CAPP-PPC process were studyed in this paper. Based on Witness, Three kinds of product serial and concurrent CAPP-PPC process simulation model were established for products with different complicated degrees. Simulation results show the time of concurrent process is much shorter than serial process, for complex products, especially obvious.

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Delgado Sobrino, Daynier Rolando, Peter Košťál, Dagmar Cagáňová, and Milos Čambál. "On the Possibilities of Intelligence Implementation in Manufacturing: The Role of Simulation." Applied Mechanics and Materials 309 (February 2013): 96–104. http://dx.doi.org/10.4028/www.scientific.net/amm.309.96.

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Over the years, the world of manufacturing has witnessed significant work in the area of Intelligent Manufacturing. Special efforts have been made in the implementation of new technologies, management and control systems, among many others which have all evolved the field. Closely following all this and due to the scope of new projects and the need of turning the existing flexible ideas into more autonomous and intelligent ones, i.e.: Intelligent Manufacturing, the present paper emerges with the main aim of contributing under a this new intelligent denomination to the design and analysis of the material flow in either systems, cells or workstations. For this, besides offering a conceptual basis in some of the key points to be taken into account and some general principles to consider in the design and analysis of the material flow, also some tips on how to define other possible alternative material flow scenarios and a classification of the states a system, cell or workstation are offered as well. All this is done with the intentions of relating it with the use of simulation tools, for which these have been briefly addressed with a special focus on the Witness simulation package. For a better comprehension, the previous elements are supported by a detailed layout, other figures and a few expressions which could help obtaining necessary data. Such data and others will be used in the future, when simulating the scenarios in the search of the best material flow configurations.

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Zhou, Rong, Han Zhao, and Ke Chen. "Production Logistics System Simulation about Automobile Parts Shop Based on Witness and E-Factory." Advanced Materials Research 291-294 (July 2011): 3175–79. http://dx.doi.org/10.4028/www.scientific.net/amr.291-294.3175.

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Aimed at the problems existed in the production logistics system for the automobile parts’ shop which has the characteristics of multi-product and small quantities, in this paper a production logistics simulation model is first established based on the witness to analyze the bottleneck of the current production line and to reengineer a new production process. Then a visual simulation model is established based on the e-factory to optimize the layout planning and the dynamic material handling system of the production logistics system which has been improved above. The results of this investigation present guidance and reference for other small and medium enterprises.

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Barone, S., and E. A. Patterson. "Polymer coating as a strain witness in thermoelasticity." Journal of Strain Analysis for Engineering Design 33, no. 3 (April 1, 1998): 223–32. http://dx.doi.org/10.1243/0309324981512940.

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The work described in this paper offers the possibility of using a polymer coating as a strain witness in thermoelasticity. In particular, the efficacy of a polymer coating for making thermoelastic measurements is investigated by experiment and the supporting theory is presented. It was found that the thermoelastic response is greatest with thick coatings at high frequencies. However, thicknesses of more than 0.5 mm and frequencies greater than 5 Hz provide adequate results.

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Chen, Jie, Jing Lu, and Shi Long Qi. "Generating Scenarios for Simulation Modeling of Container Ship Arrivals." Applied Mechanics and Materials 97-98 (September 2011): 591–95. http://dx.doi.org/10.4028/www.scientific.net/amm.97-98.591.

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To provide effective strategies for the increasing traffic and future terminal development, in investigating ways in which terminals can improve the capacity and efficiency, this paper outlines a generic simulation model in scenario of experiments for a given terminal on the software of Witness, which can be adapted by some specific terminal. The aim of this model is to measure the terminal capacity and service quality in scenarios of changed inter arrival times and different arrival schedules. It is a tool for measuring and improving the efficiency of terminal with given ship arrival scenarios, which can provide a useful guide for terminal decision-makers and operators.

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Wang, Y., and O. Yang. "Research on Industrial Assembly Line Balancing Optimization Based on Genetic Algorithm and Witness Simulation." International Journal of Simulation Modelling 16, no. 2 (June 15, 2017): 334–42. http://dx.doi.org/10.2507/ijsimm16(2)co8.

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Tan, Zhao Hua, and Ya Hui Zhang. "Modeling Simulation and Optimization Study of Fresh Seafood Inventory Ordering Policies Based on Witness." Advanced Materials Research 461 (February 2012): 541–46. http://dx.doi.org/10.4028/www.scientific.net/amr.461.541.

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It is possible to reduce the inventory cost by choosing the proper ordering policies. Considering the distinctive nature of perishable products, it is much more important to control the inventory levels properly. In this paper, we select the fresh seafood as the object of our study and build a simulation model based on Witness to analyse the inventory cost. In the model, we consider constraint conditions such as replenishment lead time, price discounts and so on. We also analyse the variation trends of total inventory cost together with the changes of parameters in three models with different ordering policies and obtain the parameters of the optimum policy by comparing the cost in that three models.

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Vysocký, Tomáš, Ľudmila Nováková-Marcinčinová, and Ema Nováková-Marcinčinová. "Simulation as a designed tool for material flow analysis by means of Witness Horizon." MATEC Web of Conferences 137 (2017): 01020. http://dx.doi.org/10.1051/matecconf/201713701020.

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Jaffrey, V., N. M. Z. N. Mohamed, and A. N. M. Rose. "Improvement of productivity in low volume production industry layout by using witness simulation software." IOP Conference Series: Materials Science and Engineering 257 (October 2017): 012030. http://dx.doi.org/10.1088/1757-899x/257/1/012030.

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Ozorio de Almeida, Alfredo M. "Negativity witness for the quantum ergodic conjecture." Journal of Physics A: Mathematical and Theoretical 47, no. 33 (August 5, 2014): 335205. http://dx.doi.org/10.1088/1751-8113/47/33/335205.

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Martinez de la Ossa, A., R. W. Assmann, M. Bussmann, S. Corde, J. P. Couperus Cabadağ, A. Debus, A. Döpp, et al. "Hybrid LWFA–PWFA staging as a beam energy and brightness transformer: conceptual design and simulations." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 377, no. 2151 (June 24, 2019): 20180175. http://dx.doi.org/10.1098/rsta.2018.0175.

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We present a conceptual design for a hybrid laser-driven plasma wakefield accelerator (LWFA) to beam-driven plasma wakefield accelerator (PWFA). In this set-up, the output beams from an LWFA stage are used as input beams of a new PWFA stage. In the PWFA stage, a new witness beam of largely increased quality can be produced and accelerated to higher energies. The feasibility and the potential of this concept is shown through exemplary particle-in-cell simulations. In addition, preliminary simulation results for a proof-of-concept experiment in Helmholtz-Zentrum Dresden-Rossendorf (Germany) are shown. This article is part of the Theo Murphy meeting issue ‘Directions in particle beam-driven plasma wakefield acceleration’.

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Flimel, Marián, and Darina Dupláková. "Application of the Ergonomic Redesign in Terms of Workplace Rationalization." Applied Mechanics and Materials 718 (December 2014): 239–44. http://dx.doi.org/10.4028/www.scientific.net/amm.718.239.

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Workplace redesign is a part of the ergonomic rationalization. Article is focused on the classification of redesign workplaces and life-cycle redesign. The optimal sequence of design creation is described as well as the example of ergonomic CNC workplace rationalization. The second part of the article is focused on the simulation and verification the model of workplace using by software Witness.

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Važan, Pavel, Michal Škamla, Dominika Jurovatá, and Vladimír Ľupták. "Effect of Selected Priority Rules on Manufacturing Objectives in Scheduling." Advanced Materials Research 488-489 (March 2012): 1125–29. http://dx.doi.org/10.4028/www.scientific.net/amr.488-489.1125.

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In this paper, the effect of selected priority rules of scheduling is presented. This effect has been studied for chosen scheduling objectives by simulation method. The authors used the simulator Witness to experimentation with priority rules in a designed manufacturing system. The results of experiments have been processed into the synthesis of knowledge. The implementation of scheduling procedure is described in this paper.

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Robinson, Stewart, John S. Edwards, and Wu Yongfa. "Linking the Witness Simulation Software to an Expert System to Represent a Decision�Making Process." Journal of Computing and Information Technology 11, no. 2 (2003): 123. http://dx.doi.org/10.2498/cit.2003.02.05.

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SAITO, Akio, Seiji OKAWA, Hiroyuki KUMANO, and Hiroshi KAWAKAMI. "Simulation on Continuous Casting Process. Effects of Casting Conditions on the Depth of Witness Mark." Transactions of the Japan Society of Mechanical Engineers Series B 66, no. 647 (2000): 1787–95. http://dx.doi.org/10.1299/kikaib.66.647_1787.

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